Home / 2,820.39-3,891.43-1,625.73

Finding the Fourth Proportional to 2,820.39, 3,891.43 and 1,625.73

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Solution

The fourth proportional to 2,820.39, 3,891.43 and 1,625.73 is: 2,243.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,820.39 : 3,891.43 = 1,625.73 : x
  2. Step 2: Convert to fraction form
    2,820.39/3,891.43 = 1,625.73/x
  3. Step 3: Cross multiply
    2,820.39x = 3,891.43 × 1,625.73
  4. Step 4: Simplify right side
    2,820.39x = 6,326,414.49
  5. Step 5: Solve for x
    x = 6,326,414.49/2,820.39
  6. Step 6: Final answer
    x = 2,243.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.